CR-2055 Use "useCompareResultCode" option for ldif-diff and ldapcompare tools

Clean of use of data and temp data in functional tests

Update or Add tests for ACI replication, import-ldif, security/account_activation clu_secure...

Last batch of changes for this week. This adds support for the IETF based Password Policy for LDAP as SubEntry. Also resolves the following issues : - 4544 : initializeBackend() should not set JE env config params directly. - 4478 : ECL in draft compat mode / search lastchangenumber can be very long - 4538 : Virtual attributes not retrieved when entry cache configured - 4547 : Search Filter Matching differ for cn=Directory Manager and plain user. - 4514 : Logs shows unexpected message with replication monitoring data missing (Partial fix) - 4534 : Replication using security does not work after server restart - 4516 : SEVERE_ERROR: servers (...) have the same ServerId In addition, they also improve reliability and performance in various areas including CollectiveAttributes, Virtual Attributes and Subentries management, Schema loading, Replication...